introduce new error types

1 files changed, 17 insertions, 7 deletions

diff --git a/usrp2/vrt/vita_tx_deframer.v b/usrp2/vrt/vita_tx_deframer.v
index 3b95f5902..55869b6e7 100644
--- a/usrp2/vrt/vita_tx_deframer.v
+++ b/usrp2/vrt/vita_tx_deframer.v
@@ -10,7 +10,7 @@ module vita_tx_deframer
     input src_rdy_i,
     output dst_rdy_o,
     
-    output [4+64+(32*MAXCHAN)-1:0] sample_fifo_o,
+    output [5+64+(32*MAXCHAN)-1:0] sample_fifo_o,
     output sample_fifo_src_rdy_o,
     input sample_fifo_dst_rdy_i,
     
@@ -21,6 +21,8 @@ module vita_tx_deframer
     output [31:0] debug
     );
 
+   localparam FIFOWIDTH = 5+64+(32*MAXCHAN);
+   
    wire [1:0] numchan;
    setting_reg #(.my_addr(BASE), .at_reset(0), .width(2)) sr_numchan
      (.clk(clk),.rst(reset),.strobe(set_stb),.addr(set_addr),
@@ -36,14 +38,18 @@ module vita_tx_deframer
    assign is_sob = data_i[25];
    assign is_eob = data_i[24];
    wire      eof = data_i[33];
-   
    reg 	     has_streamid_reg, has_classid_reg, has_secs_reg, has_tics_reg;
    reg 	     has_trailer_reg, is_sob_reg, is_eob_reg;
-
+   
    reg [15:0] pkt_len;
    reg [1:0]  vector_phase;
    wire       line_done;
    
+   reg 	      seqnum_err;
+   reg [3:0]  seqnum_reg;
+   wire [3:0] seqnum = data_i[19:16];
+   wire [3:0] next_seqnum = seqnum_reg + 4'd1;
+   
    // Output FIFO for packetized data
    localparam VITA_HEADER 	 = 0;
    localparam VITA_STREAMID 	 = 1;
@@ -61,13 +67,15 @@ module vita_tx_deframer
 
    wire        eop = eof | (pkt_len==hdr_len);  // FIXME would ignoring eof allow larger VITA packets?
    wire        fifo_space;
-   
+
    always @(posedge clk)
      if(reset | clear)
        begin
 	  vita_state 		<= VITA_HEADER;
 	  {has_streamid_reg, has_classid_reg, has_secs_reg, has_tics_reg, has_trailer_reg, is_sob_reg, is_eob_reg} 
 	    <= 0;
+	  seqnum_err <= 0;
+	  seqnum_reg <= 0;
        end
      else 
        if((vita_state == VITA_STORE) & fifo_space)
@@ -99,6 +107,8 @@ module vita_tx_deframer
 		  vita_state <= VITA_TICS;
 		else
 		  vita_state <= VITA_PAYLOAD;
+		seqnum_reg <= seqnum;
+		seqnum_err <= ~(is_sob | (seqnum == next_seqnum));
 	     end // case: VITA_HEADER
 	   VITA_STREAMID :
 	     if(has_classid_reg)
@@ -145,7 +155,7 @@ module vita_tx_deframer
 
    assign line_done = (vector_phase == numchan);
    
-   wire [4+64+32*MAXCHAN-1:0] fifo_i;
+   wire [FIFOWIDTH-1:0] fifo_i;
    reg [63:0] 		      send_time;
    reg [31:0] 		      sample_a, sample_b, sample_c, sample_d;
    
@@ -169,13 +179,13 @@ module vita_tx_deframer
        endcase // case (vector_phase)
    
    wire 		      store = (vita_state == VITA_STORE);
-   fifo_short #(.WIDTH(4+64+32*MAXCHAN)) short_tx_q
+   fifo_short #(.WIDTH(FIFOWIDTH)) short_tx_q
      (.clk(clk), .reset(reset), .clear(clear),
       .datain(fifo_i), .src_rdy_i(store), .dst_rdy_o(fifo_space),
       .dataout(sample_fifo_o), .src_rdy_o(sample_fifo_src_rdy_o), .dst_rdy_i(sample_fifo_dst_rdy_i) );
 
    // sob, eob, has_secs (send_at) ignored on all lines except first
-   assign fifo_i = {sample_d,sample_c,sample_b,sample_a,has_secs_reg,is_sob_reg,is_eob_reg,eop,send_time};
+   assign fifo_i = {sample_d,sample_c,sample_b,sample_a,seqnum_err,has_secs_reg,is_sob_reg,is_eob_reg,eop,send_time};
 
    assign dst_rdy_o = ~(vita_state == VITA_PAYLOAD) & ~((vita_state==VITA_STORE)& ~fifo_space) ;